REST APIs of Superior Scheduler
Function Description
The REST/HTTP server is part of Superior Scheduler on YARN Resource Manager host and leverage existing YARN resource manager web service port. In the section below, we will denote this YARN address:port as SS_REST_SERVER.
Below uses HTTP as part of URL and only HTTP will be supported.
Superior Scheduler Interfaces
- Query Application
- Query *all* application within scheduler engine.
- URL
GET http://<SS_REST_SERVER>/ws/v1/sscheduler/applications/list
- Input
- Output
JSON Response: { "applicationlist": [ { "id": "1020201_0123_12", "queue": "root.Q1.Q11", "user": "cchen", "resource_request": { "vcores" : 10, "memory" : 100 }, "resource_inuse": { "vcores" : 100, "memory" : 2000 }, "number_running_container": 100, "number_pending_request": 10 }, { "id": "1020201_0123_15", "queue": "root.Q2.Q21", "user": "Jason", "resource_request": { "vcores" : 4, "memory" : 100 }, "resource_inuse": { "vcores" : 20, "memory" : 200 }, "resource_reserved": { "vcores" : 10, "memory" : 100 }, "number_running_container": 20, "number_pending_container": 4, "number_reserved_container":2 } ] }
Table 1 Parameters of all application Attribute
Type
Description
applicationlist
array
Array of application IDs.
queue
String
Name of queue application.
user
String
Name of user who submits application.
resource_request
object
Currently requested resource, including vcores, memory, and so on.
resource_inuse
object
Currently resource in use, including vcores, memory, and so on.
resource_reserved
object
Currently reserved resource,
including vcores, memory, and so on.
number_running_container
int
Total number of running containers. This maps to superior engine decisions.
number_pending_request
int
Total number of pending requests, this is sum of all counts in all demands of allocation.
number_reserved_container
int
Total number of reserved containers, this maps to superior engine decisions.
id
String
Application ID.
- URL
- Query *single* application within scheduler engine.
- URL
GET http://<SS_REST_SERVER>/ws/v1/sscheduler/applications/{application_id}
- Input
- Output
JSON Response: { "applicationlist": [ { "id": "1020201_0123_12", "queue": "root.Q1.Q11", "user": "cchen", "resource_request": { "vcores" : 3, "memory" : 3072 }, "resource_inuse": { "vcores" : 100, "memory" : 2048 }, "number_running_container": 2, "number_pending_request": 3, "number_reserved_container":1 "master_container_id": 23402_3420842 "master_container_resource": node1.domain.com "blacklist": [ { "resource": "node5" }, { "resource": "node8" } ], "demand": [ { "priority": 1, "ismaster": true, "capability": { "vcores": 2, "memory": 2048 }, "count": 1, "relaxlocality": true, "locality": [ { "target": "node1", "count": 1, "strict": false } ], "resourceselect": "label1", "pending_reason": "application limit reached", "reserved_resource": { "vcores":1, "memory":1024 }, "reservations":[ "id": "23402_3420878", "resource": "node1.domain.com", "reservedAmount": { "vcores":1, "memory":1024 } ] }, { "priority": 1, "ismaster": false, "capability": { "vcores": 1, "memory": 1024 }, "count": 2, "relaxlocality": true, "locality": [ { "target": "node1", "count": 1, "strict": false }, { "target": "node2", "count": 1, "strict": false }, { "target": "rackA", "count": 2, "strict": false }, ], "resourceselect": "label1", "pending_reason": "no available resource" } ], "containers": [ { "id": "23402_3420842", "resource": "node1.domain.com", "capability": { "vcores": 1, "memory": 1024 } }, { "id": "23402_3420853", "resource": "node2.domain.com", "capability": { "vcores": 1, "memory": 1024 } } ] } } - Exceptions
Table 2 Parameters of single application Attribute
Type
Description
application
object
Application object.
id
String
Application ID.
queue
String
Name of queue application.
user
String
Name of user who submits application.
resource_request
object
Currently requested resource, including vcores, memory, and so on.
resource_inuse
object
Currently resource in use, including vcores, memory, and so on.
resource_reserved
object
Currently reserved resource,
including vcores, memory, and so on.
number_running_container
int
Total number of running containers. This maps to superior engine decisions.
number_pending_request
int
Total number of pending requests, this is sum of all counts in all demands of allocation.
number_reserved_container
int
Total number of reserved containers, this maps to superior engine decisions.
master_container_id
String
The master container ID.
master_container_resource
String
The host name that master container running on.
demand
array
Array of demand objects.
priority
int
Priority of demand.
ismaster
boolean
Is the demand corresponding to "application master".
capability
object
Capability object.
vcores, memory, ..
int
Numeric consumable resource attributes, defining the allocation "unit" for this demand.
count
int
Number of unit required.
relaxlocality
boolean
Locality requirement is preference, and not mandatory if cannot be satisfied.
locality
object
Locality object.
target
string
Locality target's name (that is, node1, rack1..).
count
int
Number of resource "unit" required with this locality requirement.
strict
boolean
If this particular locality is mandatory or not.
resourceselect
String
Resource selection expression for the demand.
pending_reason
String
Reason why this demand is outstanding.
resource_reserved
object
Currently reserved resource for this demand, including vcores, memory, and so on.
reservations
array
Array of reserved container objects.
reservations:id
String
Reserved container ID.
reservations:resource
String
Where the container is allocated.
reservations:reserveAmount
object
The reserved amount of this reservation.
containers
array
Array of allocated container objects.
containers:id
String
Container ID.
containers:resource
String
Where the container is allocated.
containers:capability
object
Capability object.
containers:vcores,memory…
int
Numeric consumable resource attributes allocated to this container.
- URL
- Query *all* application within scheduler engine.
- Query Queue
- Query *all* queues within scheduler engine, including leaf and all middle queues.
- Output
JSON Response: { "queuelist": [ { "name": "root.default", "eopen_state": "OPEN", "eactive_state": "ACTIVE", "open_state": "OPEN", "active_state": "ACTIVE", "number_pending_application": 2, "number_running_application": 10, "number_pending_request": 2, "number_running_container": 10, "number_reserved_container":1, "resource_inuse" { "vcores": 10, "memory": 10240 }, "resource_request" { "vcores": 2, "memory": 2048 }, "resource_reserved" { "vcores": 1 "memory": 1024 } }, { "name": "root.dev", "eopen_state": "OPEN", "eactive_state": "INACTIVE", "open_state": "OPEN", "active_state": "INACTIVE", "number_pending_application": 2, "number_running_application": 10, "number_pending_request": 2, "number_running_container": 10, "number_reserved_container":0, "resource_inuse" { "vcores": 10, "memory": 10240 }, "resource_request" { "vcores": 2, "memory": 2048 }, "resource_reserved" { "vcores": 0 "memory": 0 } }, { "name": "root.qa", "eopen_state" : "CLOSED", "eactive_state" : "ACTIVE", "open_state": "CLOSED", "active_state": "ACTIVE", "number_pending_application": 2, "number_running_application": 10, "number_pending_request": 2, "number_running_container": 10, "number_reserved_container":0, "resource_inuse" { "vcores": 10, "memory": 10240 }, "resource_request" { "vcores": 2, "memory": 2048 }, "resource_reserved" { "vcores": 1 "memory": 1024 } }, ] }
Table 3 Parameters of all queues Attribute
Type
Description
queuelist
array
Array of queue names.
name
String
Queue name.
open_state
String
This is inner state (self state) of queue. Indicate either "OPEN" or "CLOSED" effective state of the queue. A "CLOSED" queue does not accept any new allocation request.
eopen_state
String
This is outer state of queue. An effective state is combination of queue own state and its ancestors. A "CLOSED" queue does not accept any new allocation request.
active_state
String
This is inner state (self state) of queue. Indicate either "ACTIVE" or "INACTIVE" state of the queue.A "INACTIVE" queue does not schedule any application.
eactive_state
String
This is outer state of queue. An effective state is combination of queue own state and its ancestors. A "INACTIVE" queue does not schedule any application.
number_pending_application
int
Total number of pending applications.
number_running_application
int
Total number of running applications.
number_pending_request
int
Total number of pending request.
number_running_container
int
Total number of running containers.
numbert_reserved_container
int
Total number of reserved containers.
resource_request
object
Pending resource requests within queue in a form of vcores, memory, and so on.
resource_inuse
object
In use resource within queue in a form of vcores, memory, and so on.
resource_reserved
object
Reserved resource within queue in form of vcores, memory, and so on.
active_state
String
Indicate either "ACTIVE" or "INACTIVE" state of the queue. A "INACTIVE" queue does not schedule any allocation.
- Output
- Query *single* queues within scheduler engine, including leaf and all middle queues.
- Output
JSON Response: { "queue": { "name": "root.default", "eopen_state": "CLOSED", "eactive_state": "INACTIVE", "open_state": "CLOSED", "active_state": "INACTIVE", "leaf_queue" : yes, "number_pending_application": 100, "number_running_application": 10, "number_pending_request": 10, "number_running_container": 10, "number_reserved_container:1, "resource_inuse" { "vcores": 10, "memory": 10240 }, "resource_request" { "vcores": 2, "memory": 2048 }, "resource_reserved" { "vcores": 1, "memory": 1024 } "configuration": { "description": "Production spark queue", "max_pending_application": 10000, "max_running_application": 1000, "allocation_order_policy": "FIFO", "default_resource_select": "label1", "max_master_share": 10%, "max_running_application_per_user": -1, "max_allocation_unit": { "vcores": 32, "memory": 128000 }, "user_acl": [ { "user": "user1" }, { "group": "group1" } ], "admin_acl": [ { "user": "user2" }, { "group": "group2" } ] } } }
Table 4 Parameters of single queues Attribute
Type
Description
queue
object
A queue object.
name
String
Queue name.
description
String
Purpose of queue.
open_state
String
This is inner state (self state) of queue. Indicate either "OPEN" or "CLOSED" effective state of the queue. A "CLOSED" queue does not accept any new allocation request.
eopen_state
String
This is outer state of queue. An effective state is combination of queue own state and its ancestors. A "CLOSED" queue does not accept any new allocation request.
active_state
String
This is inner state (self state) of queue. Indicate either "ACTIVE" or "INACTIVE" state of the queue.A "INACTIVE" queue does not schedule any application.
eactive_state
String
This is outer state of queue. An effective state is combination of queue own state and its ancestors. A "INACTIVE" queue does not schedule any application.
leaf_queue
boolean
Indicate whether queue is leaf or middle. Yes means leaf queue.
number_pending_application
int
Number of pending application currently.In case of middle or parent queue, this is the aggregated number of all children queue.
number_running_application
int
Number of running application currently. In case of middle or parent queue, this is the aggregated number of all children queue.
number_pending_request
int
Number of pending demand; sum of count from each outstanding demand. In case of middle/parent queue, this is the aggregated number of all children queues.
number_running_container
int
Number of running containers. In case of middle or parent queue, this is the aggregated number of all children queues.
number_reserved_container
int
Number of reserved containers. In case of middle or parent queue, this is the aggregated number of children queues.
resource_request
object
Pending resource requests within queue in a form of vcores, memory etc.
resource_inuse
object
In use resource within queue in a form of vcores and memory etc.
resource_reserved
object
Reserved resources within queue in a form of vcores and memory etc.
configuration
object
A queue configuration object.
max_pending_application
int
Max number of pending application. In case of middle or parent queue, this is the aggregated number or all children queue.
max_running_application
int
Max number of running application. In case of middle/parent queue, this is the aggregated number or all children queue.
allocation_order_policy
String
Allocation policy, can be FIFO, PRIORITY, or FAIR.
max_running_application_per_user
int
Maximum number of running application per user.
max_master_share
string
Percentage of steady share of this queue.
max_allocation_unit
object
Maximum allowed resource per container in vcores and memory format.
default_resource_select
String
Default resource selection expression. It is used when an application does not specify one during its submission.
user_acl
array
Array of user, who have been given "user" rights on this queue.
admin_acl
array
Array of user, who have been given "admin" rights on this queue.
group
String
User group name.
user
String
User name.
- Output
- Query *all* queues within scheduler engine, including leaf and all middle queues.
- Query Resource Pool
- Query *all* resource pools within scheduler engine.
- Output
JSON Response: { "resourcepool_list": [ { "name": "pool1", "description": "resource pool for crc", "number_member": 5, "members": [ { "resource": "node1" }, { "resource": "node2" }, { "resource": "node3" }, { "resource": "node4" }, { "resource": "node5" } ], "available_resource": { "vcores": 60, "memory": 60000 }, "total_resource": { "vcores": 100, "memory": 128000 }, "configuration": { "resources": [ { "resource": "node1" }, { "resource": "node[2-5]" } ], "resource_select": "label1" } }, { "name": "pool2", "description": "resource pool for erc", "number_member": 4 "members": [ { "resource": "node6" }, { "resource": "node7" }, { "resource": "node8" }, { "resource": "node9" } ], "available_resource": { "vcores": 56, "memory": 48000 }, "total_resource": { "vcores": 100, "memory": 128000 }, "configuration": { "resources": [ { "resource": "node6" }, { "resource": "node[7-9]" } ], "resource_select": "label1" } }, { "name": "default", "description": "system-generated", "number_member": 1, "members": [ { "resource": "node0" } ], "available_resource": { "vcores": 8, "memory": 8192 }, "total_resource": { "vcores": 16, "memory": 12800 } } ] }
Table 5 Parameters of all resource pool Attribute
Type
Description
resourcepool_list
array
Array of resource pool objects.
name
String
Resource pool name.
number_member
int
Number of members in resource pool.
description
String
Description of the resource pool.
members
array
Arrays of resource name, which are current members of the resource pool.
resource
String
Resource name.
available_resource
object
Current available resource in this pool.
vcores, memory, ..
int
Numeric consumable resource attributes, available via this resource pool now.
total_resource
object
total resource in this pool.
vcores, memory, ..
int
Numeric consumable resource attributes, total via this resource pool now.
configuration
object
Configuration object.
resources
array
Array of resource name pattern configured.
resource
String
Resource name pattern.
resource_select
String
Resource select expression.
- Output
- Query *single* resource pools within scheduler engine.
- Output
JSON Response: { "resourcepool": { "name": "pool1", "description": "resource pool for crc", "number_member": 5 "members": [ { "resource": "node1" }, { "resource": "node2" }, { "resource": "node3" }, { "resource": "node4" }, { "resource": "node5" } ], "available_resource": { "vcores": 60, "memory": 60000 }, "total_resource": { "vcores": 100, "memory": 128000 }, "configuration": { "resources": [ { "resource": "node6" }, { "resource": "node[7-9]" } ], "resource_select": "label1" } } }
Table 6 Parameters of single resource pool Attribute
Type
Description
resourcepool
object
Resource pool object.
name
String
Resource pool name.
description
String
Description of the resource pool.
number_member
int
Number of members in resource pool.
members
array
Arrays of resource name, which are current members of the resource pool.
resource
String
Resource name.
available_resource
object
Current available resource in this pool.
vcores, memory, ..
int
Numeric consumable resource attributes, available via this resource pool now.
total_resource
object
total resource in this pool.
vcores, memory, ..
int
Numeric consumable resource attributes, total via this resource pool now.
configuration
object
Configuration object.
resources
array
Array of resource name pattern configured.
resource
String
Resource name pattern.
resource_select
String
Resource select expression.
- Output
- Query *all* resource pools within scheduler engine.
- Query policiesxmlconf
- Output
<policies> <policlist> <resourcepool>default</resourcepool> <queues> <name>default</name> <fullname>root.default</fullname> <share>20.0</share> <reserve>memory 0,vcores 0 : 0.0%</reserve> <minimum>memory 0,vcores 0 : 20.0%</minimum> <maximum>memory 0,vcores 0 : 100.0%</maximum> <defaultuser> <maximum>100.0%</maximum> <weight>1.0</weight> </defaultuser> </queues> </policlist> </policies>
- Output
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